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When the base current in a transistor is...

When the base current in a transistor is changed from `30 mu A`to `80 mu A`,the collector current is changed form 1.0 mA to 3.5 mA. Find the current gain`beta`.

A

30

B

40

C

45

D

50

Text Solution

Verified by Experts

The correct Answer is:
D
We know that `beta = (Deltai_c)/(Deltai_B) = ((3.5xx1.0) xx10^(-3))/((80-30)xx10^(-6))=50`
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DISHA PUBLICATION-SEMICONDUCTOR ELECTRONICS : METERIALS, DEVICES AND SIMPLE CIRCUITS-EXERCISE -1: CONCEPT BUILDER (TOPICWISE)
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